ZA76625B - An improvement in or relating to multi-pole circuit breaker with adjustable thermal trip unit - Google Patents

An improvement in or relating to multi-pole circuit breaker with adjustable thermal trip unit

Info

Publication number
ZA76625B
ZA76625B ZA625A ZA76625A ZA76625B ZA 76625 B ZA76625 B ZA 76625B ZA 625 A ZA625 A ZA 625A ZA 76625 A ZA76625 A ZA 76625A ZA 76625 B ZA76625 B ZA 76625B
Authority
ZA
South Africa
Prior art keywords
relating
improvement
circuit breaker
trip unit
pole circuit
Prior art date
Application number
ZA625A
Inventor
L Ricci
P Skalka
A Cellerini
W Stephenson
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ZA76625B publication Critical patent/ZA76625B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1009—Interconnected mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7418—Adjusting both electrothermal and electromagnetic mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H2071/7481—Means for adjusting the conditions under which the device will function to provide protection with indexing means for magnetic or thermal tripping adjustment knob

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
ZA625A 1975-02-21 1976-02-03 An improvement in or relating to multi-pole circuit breaker with adjustable thermal trip unit ZA76625B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/551,936 US3950716A (en) 1975-02-21 1975-02-21 Multi-pole circuit breaker with adjustable thermal trip unit

Publications (1)

Publication Number Publication Date
ZA76625B true ZA76625B (en) 1977-01-26

Family

ID=24203280

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA625A ZA76625B (en) 1975-02-21 1976-02-03 An improvement in or relating to multi-pole circuit breaker with adjustable thermal trip unit

Country Status (5)

Country Link
US (1) US3950716A (en)
BE (1) BE838743A (en)
CA (1) CA1053299A (en)
IT (1) IT1056695B (en)
ZA (1) ZA76625B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2717116C3 (en) * 1977-04-19 1981-03-26 Hundt & Weber Schaltgeräte GmbH, 57258 Freudenberg Multi-phase circuit breaker with thermal tripping
US4484165A (en) * 1982-07-06 1984-11-20 Texas Instruments Incorporated Circuit control device
US4719438A (en) 1986-09-30 1988-01-12 Westinghouse Electric Corp. Circuit breaker with fast trip unit
US5844188A (en) * 1996-12-19 1998-12-01 Siemens Energy & Automation, Inc. Circuit breaker with improved trip mechanism
US6087914A (en) * 1996-12-19 2000-07-11 Siemens Energy & Automation, Inc. Circuit breaker combination thermal and magnetic trip actuator
US5894260A (en) * 1996-12-19 1999-04-13 Siemens Energy & Automation, Inc. Thermal sensing bi-metal trip actuator for a circuit breaker
US5866996A (en) * 1996-12-19 1999-02-02 Siemens Energy & Automation, Inc. Contact arm with internal in-line spring
ES2790873T3 (en) * 2015-04-28 2020-10-29 Seari Electric Technology Co Ltd Magnetothermic protection device, thermal protection component and magnetic protection component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211861A (en) * 1961-11-15 1965-10-12 Westinghouse Electric Corp Circuit interrupter having an improved tripping mechanism with an adjusting structure that cooperates with a bimetal to enhance tripping movement
US3240903A (en) * 1961-11-15 1966-03-15 Westinghouse Electric Corp Circuit interrupter with thermal trip means
US3345591A (en) * 1966-06-29 1967-10-03 Square D Co Electric circuit breaker with improved tripping means including a heater strip in the thermal tripping means and adjustable air gaps in the magnetic tripping means
US3758887A (en) * 1968-02-06 1973-09-11 Westinghouse Electric Corp Multi-pole circuit breaker with single trip adjustment for all poles
US3775713A (en) * 1972-11-03 1973-11-27 Westinghouse Electric Corp Circuit breaker with externally operable means for manual adjustment and manual tripping

Also Published As

Publication number Publication date
CA1053299A (en) 1979-04-24
BE838743A (en) 1976-08-20
IT1056695B (en) 1982-02-20
US3950716A (en) 1976-04-13

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